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dmaengine: sprd: add dma mask interface in probe

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In the probe of DMA, the default addressing range is 32 bits,
while the actual DMA hardware addressing range used is 36 bits.
So add dma_set_mask_and_coherent function to match DMA
addressing range.

Signed-off-by: Kaiwei Liu <kaiwei.liu@unisoc.com>
Reviewed-by: Baolin Wang <baolin.wang@linux.alibaba.com>
Link: https://lore.kernel.org/r/20230919073801.25054-1-kaiwei.liu@unisoc.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
This commit is contained in:
Kaiwei Liu 2023-09-19 15:38:01 +08:00 committed by Vinod Koul
parent a04bbeaa37
commit 9c6e02eab1
1 changed files with 9 additions and 0 deletions
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9
drivers/dma/sprd-dma.c
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@ -1117,6 +1117,15 @@ static int sprd_dma_probe(struct platform_device *pdev)
u32 chn_count;
int ret, i;
ret = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(36));
if (ret) {
ret = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
if (ret) {
dev_err(&pdev->dev, "unable to set coherent mask to 32\n");
return ret;
}
}
/* Parse new and deprecated dma-channels properties */
ret = device_property_read_u32(&pdev->dev, "dma-channels", &chn_count);
if (ret)